Armenia generator uninterruptible power supply BESS

What is a battery energy storage system (BESS) & an uninterruptible power supply (UPS)?

Figure 1: A simplified project single line showing both a battery energy storage system (BESS) and an uninterruptible power supply (UPS). The UPS only feeds critical loads, never losing power.

Can ESS be used as an uninterruptible supply system?

The use of ESS as uninterruptible supply system is limited due to its high cost. However, with constant improvements in battery storage technologies, the energy density is getting better at a reduced cost.

What is an uninterruptible power supply (UPS) system?

Uninterruptible power supply (UPS) systems have been a familiar presence for years, known for their ability to enhance power quality and offer continuous power for critical loads. These systems typically supply power for a few minutes while the generator starts up.

Does a Bess need a separate ups?

While the BESS can start up quickly, it is not instant and there will be a brief voltage supply disruption during startup. As a precaution, the system will require a separate UPS to power sensitive or critical components, potentially including the controller for the BESS.

Which battery technology is best for a Bess builder?

A couple of other battery technologies offer opportunities for BESS builders in specific applications. Sodium-sulfur (Na-S) offer high energy and power density, a long lifetime, and stable operation under extreme ambient conditions. However, they operate at high temperatures (at least 300°C) and are sensitive to corrosion.

What type of battery does a Bess system use?

BESS systems can use a variety of battery types with relative advantages and disadvantages that are worth considering. For example, Lithium Iron Phosphate (LFP) batteries offer longer term deep cycle durability than Lithium polymer (LiPo) and they are resistant to dendrite growth so they pose no fire risk.